Lock and latch.



1.0. KAFADER & F. KERR. LOCK AND LATCH.

APPLlCATlON mu) MAY 26, I914.

1,169,6%9.. Patented Jan. 25, 1916.

2 SHEETS-SHEET 1.

I nllllllh (2 I THE CoLuMmA PLANOGRAPH 130., WASHlNGTON, D. c

1,169,6&9.

J. O. KAFADER & F. KERR.

LOCK AND LATCH.

APPLICATION F!LED MAY 25. 1914.

Patented Jan. 25,1916.

2 SHEETSSHEET 2.

JZznwJ- fla adar wihmowo fir ElM'orneqA THE COLUMBIA PLAliOGRAPl-l c0., WASHINGTON, D. A

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JAMES O. KAFADER AND FRANK KERR, 013 FORT BIDWELL, CALIFORNIA.

LOCK AND LATCH.

Specification of Letters Patent.

Patented Jan. 25, 19116.

To all whom it may concern:

Be it known that we, JAMES O. KAFADER and FRANK KERR, citizens of the United States, and residents of Fort Bidwell, in the county of Modoc and State of California, have invented certain new and useful 1mprovements in Locks and Latches, of which the following is a specification.

This invention relates to means for pre venting unlawful or unauthorized entry into buildings, or rooms or closets therein, trunks, chests, etc. i

A further intent is to engage a key or tool used in such unauthorized entry and hold the same against removal by locking the lock bolt against movement in either direc- A further object is to provide means, within a building to make the device inoperative.

A further object is to provide means, also within the building, for actuating the bolt, from lOCKQd position of the key therein,

into retracted position; and further objects are to provide such devices which are simple in construction, readilv installed, highly efficient, and comparatively inexpensive.

The invention is fully set forth in the following specification, of which the accompanying drawings form a part, in which the same reference characters are used to designate the same parts in each ofthe views, and in which 2-- Figure 1 is an inner elevation of a door provided with our invention; Fig. 2 is an enlarged, fragmentary view of the door with a plate which we employ removed; Fig. 3 is an enlarged section on the line 3-7-3 of Fig. 1, with the parts in key engaged posi- 'tion and sounding of the alarm; Fig. 4 is a similar view but showing the parts in ready position, the door being locked; and Fig. 5 is a similar view of a modification, with the parts in the positions shown in Fig. 3.

In the drawings forming a part of this application we have shown a door a and frame a thereof, said door having the usual or any desired look a provided with the sliding bolt a operable by means of a key a all these parts being of conventional form with the exception that we provide a vertical slot a on the inner side of the bolt a and which forms an important part of this invention.

Mounted in the frame a adjacent the door, is a casing Z), preferably of porcelain or other non-conductive material, having a metal covering plate 12 secured to the inner side of the frame, and said casing contains a lever 6 having arms 6* and 6 arranged at a rightangle, and pivoted at b, said arm 6 extending through the frame and carrying a pin Z2 which projects into the bolt recess behind the striking-plate of the door frame, and in the path of the bolt, said arm also carrying an oppositely directed pin 6* which extends to a recess 6 in the casing 6.

Within the casing, beneath theface plate 6 and adapted to be locked thereto by means of a thumb-nut 0, is a slide 0 adapted to bear against the arm 6 of the lever b to maintain the arm 6 in a position substantially parallel to the face of the door frame. As clearly shown in Fig. 4, we may, if'desired,-provide two electrical contacts d and (Z the former of which supports a conductive spring plate (Z and said contacts are in electrical connection with wires (Z and (Z of an electrical circuit adapted to be closed through the plate (Z and through an electric bell (Z Fig. 1, or, ifdesired, through an electric light as well, not shown, and which might be arranged in any part of a building ormany lights might be so connected to illuminate the entire building; by reference to Fig. 4, it will be seen that the pin 6 holds the plate (Z against the elasticity thereof but, if said pin be withdrawn, said plate closes the circuit through the two contacts, as shown in Fig. 3, thereby energizing the alarms; this electric system, however, forms no part of the present invention but may be made the subject matter of a subsequent application for patent.

The parts are normally in the positions shown in Fig. 4;, with the pin 6 partially withdrawn and out of the path of the bolt a and held so by means of the slide 0 and the door may be readily locked and unlocked but, if the slide 0 be actuated to release the lever N, as when the occupants of a dwelling retire for the night, our de vice becomes ready and operative in the event of unauthorized tampering with the lock, this being true even of the householder who may be out of the house. When the key a is inserted into the lock and turned to retractthe bolt a said bolt is retracted, for a short distance, until the pin 6 enters the slot a, being forced thereinto by means of the spring plate (Z and said bolt is held against movement in either direction. The

- means of the'pin b, and the key leaf is im- 'prisoned in the notch of the bolt, said key cannot be rotated in either direction, nor removed from the lock. When the lever 12 is thus moved on its pivot by the plate 6Z3, said plate closes theelectrical circuit/described by means of the contact (Z andthe house occupants are notified that an attempt is beingmade to open the door and,

i if it be a' member of the household, the slide 0 maybe actuated to return'the parts to normal positions, with the bolt free, but the key is useless at the angle at which it was imprisoned, in most locks of this type, and to overcome this a turn-button e is provided, within the building, having a shaft secured thereto extending Within the door frame Where it carries an arm 6 in turn pivoted toa slide 6? adapted to impinge on the end of the bolt, and it will be seen that by turning the said button the boltrmay be forced into retracted position and the door opened from within or from the outside. 7 I

The form thus far' described has the disadvantage of preventing the locking of the door, with the parts in readiness foroperating in'the manner set forth, by means of a' key, this being overcome by beveling the face of the pin'lf, as clearly'shown in Fig. 5, whereby the bolt, in its outward movenient, may force the said pin out of its path but, upon attempting to retract the bolt to open the door, said pin enters the slot of the bolt as already described.

The invention therefore consists, primarily, of means for preventing the unlocking of a door and for imprisoning the key; secondly, of means for making the device inoperative; and thirdly, of means for forcing the bolt into retracted position; with a reservation to ourselves of all forms of construction making these results possible, within the scope of the following claims, what we claim as new, and desire to secure by Letters Patent, is 1. The combination with a door, door frame, and lock having a sliding bolt; of means connected with said door frame for engaging said bolt to arrest the same intermediate'its full movement, means for releasing'said engaging means, a slide adapted to bear against the outer end of said bolt, andmeans for actuating said slide to retract said bolt when released from said engaging means. v 2. The combination with a door, door frame, and lock having a sliding bolt; of means connected with said door frame for engaging-said bolt to arrest the same intermediate its full movement, means for releasing said engaging means, means for making said engaging means inoperative, a slide adapted to bear against the outer end of said bolt, and means for actuating said slide to retract said bolt when released from said engaging means.

In testimony that We claim the foregoing as our invention we have signed our names in presence of-the subscribing witnesses.

JAMES O, KAFADER. FRANK KERR.

Witnesses:

I R. A. BAKER,

S. S. GARRETT.

' 'Copies o f this patent may be obtained for fiveeents each, by addressing; the Commissioner ofPatenta i Washington,-D. C. 

